Hannah Arendt's most important observation about political life is that the plurality of human beings — the irreducible fact that we are all different from one another — is not the problem that politics must solve. It is the condition that makes politics, and genuine human encounter, possible.

In her last interview, recorded in French in 1973, Arendt was asked about America — a country she had lived in for more than thirty years, arriving from Europe in 1941. Her answer goes to the heart of everything she had been thinking about for decades. America, she said, is not a nation-state. It is not united by heritage, memory, soil, language, or common origin. What unites its citizens is a single act: the acceptance of a constitution. And the founding act itself was something historically unprecedented — the bringing together of entirely disparate ethnic minorities and regions without levelling their differences, without making them disappear. The differences were not the problem to be overcome. They were, from the beginning, the material out of which something new was being made.

This is the political argument at the heart of The Human Condition. Arendt's central concept is plurality — the condition of human life in which we are all distinct, all different, none of us reducible to any other. If everyone were the same, action would be meaningless. There would be no one to witness it, no one to respond in ways you could not predict or control, no genuine public realm in which anything new could happen. The plurality of perspectives — the fact that the world looks different from every position within it — is what makes understanding necessary, and what makes it matter.

Her argument extends to history itself. History, she insists, is not a series of trends or forces or ideas moving toward an inevitable destination. It is a narrative of actions and deeds, driven by individuals who initiate something in a world shared with others whose responses they cannot control. She borrows and reframes Adam Smith's invisible hand — pointing out that the very need for such a concept reveals that more than economic calculation is at work in human exchange, that the actor is always also a being whose actions escape their intentions and take on meaning in the responses of others. What she calls the invisible actor is the recognition that no one fully authors their own story; the story emerges from the encounter between action and the plurality of those who witness and respond to it.

In Homer, she notes, a hero was simply a free man who participated in the Trojan War and about whom a story could be told. Not a demigod, not an exceptional being — just someone who acted, who inserted themselves into the world and began something. The courage required was not physical but ontological: the willingness to appear before others, to speak and act in a space where the outcome cannot be controlled, where plurality means that your action will be received and interpreted by people who are genuinely different from you and will make of it something you did not intend. That exposure — to difference, to unpredictability, to the judgment of others — is what action requires and what it means to be fully human in Arendt's sense.

Most accounts of empathy treat difference as the obstacle — the gap to be crossed, the otherness to be understood or overcome. Arendt suggests the opposite: that difference is the condition of genuine encounter, that a world without plurality would have no need of empathy because there would be nothing to understand. The practice of attending to another person — really attending, without reducing them to a version of yourself or a position in a pre-existing argument — is, in her terms, a political act. It acknowledges the reality of the other's distinct existence. It treats plurality as the substance of shared life.

She ends the interview by returning to a line from René Char that she had used years earlier to open Between Past and Future (1961) — in French translated, somewhat reductively, as La Crise de la culture: "notre héritage n'est précédé d'aucun testament." This was a conviction she kept returning to: that we are free to take from the past whatever is useful, wherever we find it, without the guidance of a tradition that tells us what to keep. It is, she adds in the interview, not a comfortable freedom. Most people prefer their thinking ready-made. The willingness to think for yourself — and by extension to encounter others as they actually are, rather than as your thinking has already arranged them — remains, she suggests, the rarest and most necessary thing.